The hide_server_address_states config option and related
policy rule were deprecated in Queens:
I6040e8c2b3e132b0dfd09f82ae041b4786a63483
They are now removed in Stein as part of the API extension
merge effort.
Part of blueprint api-extensions-merge-stein
Change-Id: Ib3582038274dedbf524ffcaffe818ff0e751489d